What is stereo?




There are now two system of high fidelity, monophonic (monaural) and stereophonic. Monophonic is a system that starts from one microphone and is fed through a single high fidelity set. Stereophonic is a double system. Two separate microphones are placed at different sides of the orchestra and two different systems are used to keep the two signals or channels separated. Two separate speakers are used, placed on different sides of you room. Stereo is much like 3-D photography, two slightly different sound reach your ears giving you a new dimension in sound.




H.H. Scott '59





Optonica RT-5200 deck


Optonica RT-5200 Stereo Cassette Tape Deck with 2-Motor drive System and Microprocessor Full Logic Solenoid Control System.

Convenience and performance are uaranteed by the microprocessor full logic solenoid transport control providing greater reliability with smoother, softtouch control of complex tape transport functions. The 2-motor drive system adds to performance by assuring speed stability. For added convenience, APSS permits one-touch skipping or repetition of desired selections. The automatic spacing function allows blank spaces to be inserted for use with APSS. Dolby Noise Reduction significantly improves the Signal-to-Noise ratio, while the MPX filter removes any remaining pilot signal from FM broadcasts. Metal tape capability lets you take full advantage of the superior performance ensured by metal tapes,while a 4-position tape selector facilitates setting for optimum performance with CrO₂, FeCr and normal tapes as well as metal tape. A fluorescent peak level display is also provided for extra monitoring ease.

Specifications
Motor:  2 motor drive system
Capstan Drive :  Electronically-controlled DC motor
Reel Drive :  High torque DC-motor
Heads:
Record/Playback :  hard permalloy
Erase :  Double-gap ferrite
Wow and Flutter:  ±0,18% (DIN 45 500);  0,058% WRMS
Tape Speed Deviation:  ±1,5%
FF/REW Time :  110 sec (C-60)
Frequency Response:
Normal Position :  40 - 13,000 Hz (±3 dB); 40 - 14,000 Hz (DIN 45 500)
CrO₂ Position :  40 - 15,000 Hz (±3 dB);  40 - 16,000 Hz (DIN 45 500)
Fe-Cr Position :  40 - 15,000 Hz (±3 dB):  40 - 16,000 Hz (DIN 45 500)
Metal Position :  40 - 16,000 Hz (±3 dB): 40 - 17,000 Hz (DIN 45 500)
Signal-to-Noise Ratio (Fe-Cr Tapes):
Dolby NR off :  56 dB
Dolby NR on :  66 dB at over 5 kHz
Recording System:  AC bias (105 kHz)
Erase System:  AC erase (105 kHz)
Input Sensitivity/Impedance:
Mic :  0,2 mV/ 6,8 k Ω
Line -In :  50 mV/ 50 k Ω
Rec/Pb (DIN) :  0,2 mV/ 6,8 k Ω
 Output Level/Impedance:
Line-Out :  710 mV/50 k Ω at 0 dB
Rec/Pb (DIN) :  710 mV/50 k Ω at 0 dB
Headphones :  89 mV/ 8 Ω at 0 dB
Power Source:  110, 220, 240 V 50/60 Hz  AC
Power Consumption:  30 W (at 220 V)
Dimensions (W x H x D):  430 x 95 x 320 mm
Weight :  5,8 kg


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